In the Torah we seem to only find this word associated with Temple related breads. In Rabbinic writings the word challa was the word referring to the amount of dough separated to be given to a kohen. ...

I am wondering if small portions of dough, made by separate women in a challah baking class (thus each small portion would be owned by a single woman), can be combined to create the requisite amount ...

I understand a bracha on dough is made if the amount of flour is greater than a certain amount, sourced here.
I have a small food processor I use to knead the dough. I plan to make a bunch of dough ...

I saw on this website http://www.secretofchallah.com/50708/When-to-separate-challah#opinions that one should not separate challah if using less than 8.5 cups or about 2 lbs. I know there are various ...